Spinning spindle



Aug. 18, 1936. 2,051,641

G. H. MAGRATH SPINNING SPINDLE 2 She-euts-Sheet 1 l Filed May 24,"1954 Aug. 18, 1936. G. H. MAGRATH SPINNING SPINDLE Filed May 24, 1934 2 Sheets-Shes?I 2 Inventar, Gear e H a rat/z Attgy( Patented Aug. 18, 1936 y V UNITED y i v i 2,051,641; emi-n. Mwah, wanten@ Mass. Apsii'caiiofmy 2vi, 1934f,sria1 Naf-727,299 ff l K 'cia'imsLf (c1. illust) y This invention relates to spinning machines I and more particularly to a spindlebolster and associated mechanism. 'f The principal objects of the invention are to 5 provide a spindle mounting which `is* of'simple design and of strong and durableV construction and which is reliable and elcient in operation;

to provide a spindle mounting which is inexpenproved spindle and will be apparent vfromV a com' i sideration of the following description and accompanying drawings which show different embodirnents of the invention chosen for' the purpose of illustration. f

In the drawings: Fig. 1 is a sectional elevation ofone embodiment of the invention; Fig. 2 is an enlarged section on the line 2'''2 of Fig. 1;

Fig. 3 is an elevation, with parts broken away and shown in section, of av bolster lconstructed in laccordance with the present invention;

Fig. 3* -is a fragmentary sectional view showing the upper end of a bolster of moditled construction;

' Fig. 4 is a sectional elevation of another emv bodiment of the invention;

Fig. 5 is an enlarged section on the line 5-5 o! Fig..4; and

Fig. 6 is an elevation, with parts broken away and shown in bolster.

The embodiment shown in Figs. V'1 to 3 corn*-- prises a bolster case I0 which may be of generally cylindrical shape having an exteriorly threaded portion II, or other suitable means by which it may be secured to the frame of a spin- 50 ning machine (not shown). Adjacent to its upper end the insideof the case is provided with an annular shoulder I2 which may be beveled or A rounded, and a cylindrical collar or sleeve Il projects upwardly beyond the shoulder as shown in 55 Fig. '1. A pair of washers or y|57 -and -IS is section, o1' la modified form of disposed furthe bottoni :f "thebolster' case andI a'. socket x'nembr` l 1, loosely fitting within the case, 'is mountedon these disk`s.*An annular collar or `abutmentrn'iernber 20 issecuredito tliejinner wall of the case by apressfiit oriri anyother suitalcilev manner anda coiled compression spring 2i is interposed between'thesocket I I and'co'llar 20, the'spring 2| being underjsuiiicient compresi I sion yieldi'ngly to'-holdthe'socket member :in

place-arid restrain movementftherefv- A bolster 25 loosely ts within: the bolster' case with its lower' end projecting into the socketv l1. 'Adj acent to its upperend the' bolster is' provided with an annular shoulder 246 having`a'beveled`or rounded surface conformingftothat yof y'shoulder I2 on the inside of the 'casegy The bolster is supported byf'the shoulder I2 so that it may have a slight*rockingjmovement within'the case; In

order to; prevent rotation or longitudinal movement, the bolster may be' r'irovidedfwith` a circumferential groove 28 having a recessed por;- tion 29 for the reception of the end of a setscrew 30 carriedby thebolstercase.v vThe inner diam,-

eter of the bolster is appreciably greatertlian the diameter of the spindle blade 33 so` as 'to provide a clearance between these parts andj its lower end is provided with astep bearing 3| (Fig. 3) which supports thelower end of the spindle b1ade33. The lupper end of thebolster is provided with a coaxial collar or sleeve 35'wh-ich looselyjiits about the blade 33 andwhich' has a'r hardened outer-periphery vproviding thejinner' race ci an anti-frictionlciearing` which supports thecentral part of the" blade ,33. yThe'collarvil.may[form an integral part of the Abolster proper, as shown in Fig'.A 3, in which case 4it may be first machined to the proper dimensions subjectedyto a heat l treating operation or'other suitable ytreatment for imparting the'desired khardness to its outer surface, or if desired, the collarmay lconsist of a separate part such as a bushing 35* (Fig. 3B)

whichhas previously been subjected'to a suitablev collar I5 which constitutes the inner race of the ybearing member, and the outer periphery of the skirt 38 is spaced from the sleeve I4, of the bolster case as shown in Fig. 1. The bearing member is so positioned on the blade that when the blade is inserted in the bolster withvits lower end supported by the bearing 3l, the lower end of the skirt 38 is held in spaced relation to the shoulder 26 of the bolster and its upper end is disposed below the top of the sleeve I.4. As shown in Fig. 1, the whirl is mounted on the blade in the usual manner with its depending driving flange 46 circumposed about and in spaced relation to the sleeve I4 of the bolster. A latch member 48 is pivotally mounted on an arm 48 integral with the bolster case and is operative to prevent accidental i removal of the blade and whirl when in assembled relation with the bolster.

- It will be noted that the bearing 3| and collar 35 provide the only supports for the blade and whirl members and that with the exception of the .rollers 40 and the end of the blade all parts of these members are held out of contact with the bolster and case, thus minimizing the frictional resistance and wear, and insuring a smooth and vibrationless operation. Furthermore, the

parts are so constructed and arranged that when.

the spindle is operated at high speeds the bolster is permitted suiiicient freedom of movement to allow the blade t'o center itself and thus relieve the bearings from the stresses and strains to which they would otherwise be subjected. It will be further noted that the construction and arrangement of the parts are such that the blade and y whirl may be removed from the bolster and replaced without dismembering any of the parts or making any adjustments.

In the construction shown in Figs. 4 to 6 the general arrangement of parts is quite similar to that of the previously described embodiment, the blade and whirl members and certain parts of the bolster and case being substantially identical, and the same numerals are used to designate the corresponding parts. In this embodiment, however, the sleeve on the upper part of the case I8 is dispensed with and the upper end of the bolster is provided with an enlarged bore 34 as in the modification shown in Fig. 3*.

The anti-friction bearing member 38 comprises an outer race ring 50 having a circumferential groove on its inner periphery, an inner race consisting of an elongate sleeve or bushing 5 having a circumferential groove on its outer periphery adjacent to one end, and a plurality of ball bearing elements 53 and a retaining cage 54 interposed between the inner and outer races. The inner race or bushing 5| has a press t within the bore 34 of the bolster and is thus rigidly secured thereto, constituting in effect an integral part of the bolster. The outer race ring 50 has a sliding t against the inner peripheryv of the driving flange 45, thus permitting the whirl and blade to be 'removed and replaced without the necessity of dismembering parts or making adjustments.

In this embodiment, as in the previously described embodiment, the construction and arrangement is such that the bolster is permitted sufficient freedom of movement to allow the blade to center itself when operating at high speeds, and these parts are likewise held out of contact .with the case and bolster except at their two points of support.-v -"-A further feature ofl this construction resides in a construction and arrangement of the anti-friction bearing and associated parts, it beingnoted that the entire bearing may be easily removed andanother replaced merely by expanding with heat the upper end of the bolster. I

vWhile I have shown and described diiferent embodiments of 'the invention it is to be understood that the present disclosure is for the purpose of illustration only and' that various changes in shape, proportion and arrangement of parts, as well as the substitution of equivalent elements for those herein shown and described, may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim:

1. A spindle construction comprising a bolster case, a bolster mounted to rock within said case. said bolster having an'enlarged bore at its upper end. a removable blade mounted within said bolster, a whirl secured to said blade, said whirl having a depending driving flange surrounding the upper end of said bolster, a cylindrical sleeve fitting within said bore, said sleeve having a hardened upper end projecting upwardly beyond the end of said bolster and loosely fitting about said blade, a plurality of anti-friction bearing members circumposed about the end of said sleeve. said sleeve constituting the inner race for said bearing members, and an outer race ring and retaining cage circumposed about said bearing members, said outer race ring fitting against the inner periphery of said driving flange and supporting the center of said blade for rotation.

2. A spindle construction comprising a bolster case, a bolster mounted to rock within said case, said bolster having an enlarged bore at its upper end, a blade rotatably mounted within said bolster and in spaced relation to its inner periphery, a whirl secured to said blade and having a depending driving flange surrounding the upper end of said bolster case, and an anti-friction bearing member interposed between said blade and driving flange.` said bearing member comprising an outer race fitting against the inner periphery of said iiange, av cylindrical sleeve loosely tting about said blade and having a press t within the bore at the upper end of said bolster, the upper end of said sleeve projecting upwardly beyond the end of said bolster and having a hardened circumferential grooved part on its outer periphery adjacent to its end providing the inner race of said bearing member, and a plurality of ball bearings disposed in said groove.

3. A spindle construction comprising blade and acci-,641

bearing, said socket-like member being freely movable in paths which extend substantially at right angles to the axis of rotation of said blade member, and a coiled compression spring interposed between said socket-like member and one end of said tubular member, said spring yieldingly restraining the freedom of movement of said socket-like member and being operative yieldingly to urge said socket-like member to a position substantially coaxial with said tubular member when said socket-like member is in a position eccentric to said tubular member.

4. A spindle construction comprising blade and whirl members, a bolster case, a. bolster mounted to rock within said case, the lower end of said bolster having a bearing rotatably supporting the lower end of the blade member. anti-friction bearing member carried by the upper end of said bolster and arranged rotatably to support said blade and whirl members at a point between the ends of the blade member, and centralizing means for restraining rocking movement of the lower end of said bolster, said means including a socket-like member loosely fitting within said bolster case and surrounding the lower end o'f said bolster, and a coiled compression spring interposed between said socket-like member and one end of saidv bolster `case, said spring yieldingly restraining the freedom of movement of said socket-like member and being operative yieldingly to urge said bolster to a position coaxial with said case when said bolster is rocked to a position eccentric to said case. v

5. A spindle construction comprising a bolster case having an annular shoulder at its upper end, a bolster mounted within said case, the bolster having a flange seated on said shoulder so as to support the bolster for rocking vmovement within the case and an upper end provided with a cylindrical collar having a hardened outer periph ery, a removable blade rotatably supported at its lower end in said bolster, a plurality of bearing elements circumposed about said collar, said collar loosely fitting about said blade and providing an inner race for said bearing elements.

retaining means including an outer race ring for said bearing elements, said retaining means embracing said blade and rotatably supporting its intermediate portion, and centralizing means at the end of said bolster operative to restrain rocking movement of said bolster.

GEORGE H. MAGRATH. 

